treeview example

Suppose you create a table in the database, such as tb_treeview. Create Table tb_treeview ( Id int not null, Displayname varchar (20 ), Parentid int, URL varchar (100) ); Insert several data into the table, for example: Insert into tb_treeview (1, 'China', 0 ,''); Insert into tb_treeview (2, 'anhui province ', 1 ,''); Insert into tb_treeview (3, 'hefei ', 2 ,''); Insert into tb_treeview (4, 'jiangsu province ', 1 ,''); Insert into tb_treeview (5, 'na

You can use a page getxml. aspx to generate XML data. This page generates different XML based on different received parameters, and then uses the node's treenodesrc attribute to point to getxml. the ASPX page is ready. Of course, you need to pass different parameters through querystring. for example: Test.htm---------------------------------------------------- ----------------------------------Getxml. aspx. CS----------------------------------In the p

1. Set the selected node. For example, select the second node.Function setselnode (){Treeview1.selectednodeindex = "1 ";} 2. Get the text, ID, or nodedata of the selected node.Function getattribute (){Alert (treeview1.gettreenode (treeview1.selectednodeindex). getattribute ("text "));}Replace text with ID or nodedata to obtain the ID or nodedata of the selected node. 3. Modify node attributes, such as modifying the text of the first nodeFunction modif

The following code example shows how to use the parentnodestyle attribute to control the appearance of the parent node in the Treeview control. View plaincopy to clipboardprint?

Recently, C # has been used to process ie-related operations, so some code has been accumulated. The following code is an example of generating Dom Treeview from HTML code: // This process will be recursively called// Dom_node is the current HTML Dom Node// Tree_node is the node currently inserted into the treePrivate void insertdomnodes (ihtmldomnode parentnode, treenode tree_node){Int sibing = 0; // The s

During development, the Treeview control is often used to display the organizational structure, directory structure, and attribute checkedboxs. The following is an example of selecting and canceling a node. If a node has a subnode, you can select all the subnodes. If you cancel the selected status of a node, if both the current node and the parent node exist, the selection of the parent node will be cance

CTreeView is used to display data with hierarchies, using the TreeView to set up the Data property. Data is an array with the following structure: Ext:string, the text of the tree node. Expanded:boolean, optionally, indicates whether the node is expanded. Id:string, optional, the node ID. Haschildren:boolean, optionally, the default is False, and when True indicates that the node contains child nodes. Children:array, optional, sub-node array. Ht

Go to [Silverlight getting started series] Using MVVM mode (9): Want to control the TreeView node expansion in ViewModel ?, Mvvmviewmodel After reading my blog, many children's shoes also practiced MVVM, but they found that MVVM in Silverlight practice is difficult to implement, which is much more difficult than pure CodeBehind. First, it was originally in the xaml. the CodeBehind part of cs is easy to control the interface logic. After the logic is m

Problem description: The Treeview in frameset contains four nodes. If you want to open one, close the other three nodes. It is written in treeview1_expand at the beginning. It can also be used. You can set autopostback to true. It is difficult to refresh, so you can find information on the Internet. Related topics are as follows: ============================ 1. "Do not submit when expanding, submit only when you change the node selection" 2. "enable t

How to automatically send the treenodecheckchanged event of the Treeview back to the server When ASP. NET 2.0 uses the Treeview control, it finds the treenode object with the checkbox control (Treeview node). If you select checkbox, the page cannot be sent back. In msdn, The Treeview. treenodecheckchanged event has a n

Sometimes we change the itemtemplate template of Treeview to facilitate the use of Treeview, but sometimes we cannot get the selecteditem of Treeview. The following is a template that adds a multi-selection box in treeviewitem, when we click checkbox, The selecteditem of the Treeview is null. Even if one item is select

I have seen many netizens have questions about using Treeview, and some people always give some misleading answers. I have written this article to confirm that Treeview is still very useful on the web. First, check my two treeviews: 1. It is a set function: When opening: Node opening In the browser: 2. You should be familiar with this Next, let's look at the datawindow of the

When the user focus leaves the Treeview, the selected node of the Treeview is still highlighted, but the color is too light to be seen. Override drawmode () here to control the color of the selected node. Treeview. hideselection = false; the selected node can be highlighted.Refer: Http://msdn.microsoft.com/zh-cn/library/system.windows.forms.treeview.hideselecti

In section 2.0, the Treeview uses ontreenodepopulate to dynamically load data. The data can be loaded. But how can I obtain a specific node VALUE OF THE Treeview? In addition, as long as the page is PostBack, no data is loaded by the Treeview. How can I solve these problems? In addition, as long as the page is PostBack, no data is loaded by the

Note: This is a class that uses the javascrpt class to display the tree structure. Version 0.5 of the program (the first unperfect program) is implemented using JavaScript and xml dom. In ie5.5 or earlier versions, the msxml3.0 component must be installed. This version of the program uses arrays instead of xml dom, which is faster and more stable! Next, I will use HTML Dom to compile the listview class. Please give me some suggestions. This is the first one I have written to my satisfaction. You

A Treeview is composed of nodes. You can perform operations on the Treeview. Items attribute. Items is a ttreenodes object, which is a ttreenode set. 1. For ttreenodes, that is, Treeview. items, these attributes are available:1. Count: number of nodes.2. item [Index]. Get the node through index. 2. For ttreenodes, that is, T